Branching Agent

Most nylons/polyamides are linear polymers which show pseudo-Newtonian rheological behavior, which means that there is very little difference between its melt viscosity at low shear versus high shear. This leads to poor melt strength and its unsuitability for some applications. By compounding in a branching agent like ZeMac® these plastics develop a branched chemical structure which transforms its rheology to Newtonian behavior. It now demonstrates high viscosity at low shear, where melt flow rates are measured, but lower viscosity at high shear typical in injection molding applications.